PHOENIX (AP) — Colorado left-hander Drew Pomeranz worked himself back to the majors, believing he had straightened himself and his mechanics out.
After a second straight shaky outing, it's clear he still has some work to do.
Pomeranz struggled in his second start since being called up, allowing five runs in the first three innings to give the Arizona Diamondbacks all the momentum they needed for an 11-1 victory over the Rockies on Saturday night.
"I feel like I have worked on a lot of things this year and have gotten better and haven't been throwing like this," Pomeranz said. "So it's something that I need to figure out and give us a better chance to win the game."
Pomeranz, who made 22 starts for Colorado last season, spent most of this year at Triple-A Colorado Springs before being called up to pitch against San Francisco on Sunday. He allowed four runs on seven hits — two of those homers — in 4 1-3 innings of a 5-2 loss.
The left-hander labored from the start against Arizona, needing 10 pitches to get leadoff hitter A.J. Pollock and going over 40 the first two innings. He walked two to load the bases in the second inning and pitcher Wade Miley followed with his fourth hit of the season, a three-run double slapped into the corner in left.
Pomeranz opened the third inning with a walk, then left a letter-high fastball up to Paul Goldschmidt, who hit it into the second deck in left for a two-run homer that put Arizona up 5-0 and increased his NL-leading RBI total to 73.
Pomeranz (0-2) worked out of a bases-loaded jam in the fourth inning after walking Goldschmidt, but was lifted after that. He allowed five runs on five hits and walked five to lose for the seventh time in eight decisions dating to last season.
"I have seen him pretty good and I know that is in there, but you've got to make some progress and be more efficient," said Rockies manager Walt Weiss, whose team has lost five of six.
Arizona starter Wade Miley certainly was — with his arm and his bat.
The Diamondbacks returned to the desert on Friday after a 10-game road trip that ended with a long series against the Mets that included rain delays and two games that each lasted at least 15 innings.